Euclidean space is one of the basic concepts in mathematics.

This area is severely arid, making it difficult for plants to grow.

I was deeply moved by his words.

I deeply sympathized with his story.

It will still take some time to complete this project.

This dish uses olive oil, which has been used since ancient times.

The theory of Banach spaces plays an important role in many fields of mathematics.

He is traveling around the world as an ecologist.

He conducted the trial based on common law.

This is the book that I am reading.